How can we use environment variables in a Jekyll config file?

Question

Is there a way I can use one my bash environment variable (say $FOO) in my Jekyll's _config.yml file?

I've tried using:

foo = <%= ENV['FOO'] %>

But it didn't work as the Ruby code wasn't interpreted.

Versions used:

• Ruby: 2.1.2
• Jekyll: 2.5.3

Answer 1

If your goal is to use environment variables as liquid items {{ site.something }}, you might be able to get this thing in your Gemfile a go:

gem 'jekyll-environment-variables', group: :jekyll_plugins

And then you'll be able to use {{ site.env.HOME }} and expect it be converted to something like /home/ubuntu in the output HTML.

_{Disclosure: I am the owner of the gem and I've been using it personally since long ago.}